Works very well when not broken. Cleans the chain very well, easily installed and removed, secure in place. However, I've had three over last five years and the handle retainer and the side brush wheel inside have both broken on all three. One use on a wider chain like 5- or 6-speed will break the brush wheel. I'm an engineer, so I know Park could fix these and have an excellent cleaner. As it is, I've given up on this one until they change their design and materials.

I thought I'd give this a try after using the White Lightning degreaser/brush combo, which is pretty cool itself. Maybe it's the Park degreaser but it gets the chain GLEAMING!! However, the clips that hold the top and bottom together easily come off. After that happened a few times I took off the handle entirely and started holding the top and bottom halves by hand which isn't tough to do by any means. It does a GREAT job on the chain, turn the crank 30 times per the instructions (remember those?). I suppose you can clean the whole assembly out with some hot water and dish soap.

I also put some of the degreaser in a small bowl and let my cassette soak in that to ease cleanup.

This chain tool works really well, however I have a feeling I will be looking into getting one that wont fall into a million pieces as soon as I take it off the chain. The things that keep the clips attached to the tool fell off the first time i used it. Its getting harder to get it onto the chain atm without having some piece (handle, magnet etc) falling off the thing.That being said, it cleans really really really well.But needs a rework.

Just echoing some of the experiences others had. Does what it is suppose to do well, but poor materials means this chain cleaner does not last. The clips that seal it break off almost immediately. The sponge is not available, and the magnet at the bottom (to pull metallic particles out of the cleaning solution, breaks off as well. Park could have a stellar tool if they reinforced the clip hinges, used a screw or rivet instead of a plastic cap for the magnet, and sold replacement parts such as sponges.

The plastic ends where the metal clips go in to lock the cleaner on the chain get weak and eventually break off after several (10 or less) uses. This renders the tool useless. Need stronger or thicker joints where the metal clips lock in.

This tool is easy to use and brings a dirty, crunchy sounding chain back to smooth quiet running life. Just clamp it on, fill with with your favorite de-greaser (hopefully biodegradeable)and spin your chain backward. In only seconds your chain will clean right up. Want a cleaner chain? Repeat the process. You won't be dissatisfied.

What makes this particular chain cleaner better than the rest is the fact when the brushes and wheels inside wear out, Park sells a replacement kit for cheap. It truly is that last chain cleaner you will ever own.

This comes from a cyclist who commutes daily year round in all weather that the four seasons can deliver.